The speeds of three cars are in the ratio 1:2:5 the ratio of times taken by these cars to travel the same distance is:
A). 10:4:5
B). 10:5:3
C). 10:5:1
D). 10:5:2
150 m long train is running at 36 km/h. In how much time, will it cross an eletric pole?
A). 10 s
B). 12 s
C). 15 s
D). 11 s
A 125 m long train is running at 45 km/h. In how much time will it cross a tunnel 375 m long?
A). 45 s
B). 41 s
C). 42 s
D). 40 s
A train 150 m long is running at 55 km/h. In what time will it pass a man runinng at 10km/h in the same direction in which the train is going?
A).
12 s
B). 10 s
C). 11 s
D). 13 s
Walking with 4/5 of his usual speed, a man covers a ceratin distance in 30 min more than the time he takes to cover the distance at his usual speed. The time taken by him to cover the distance with us
A). 1 h
B). 2 h
C).
5 h
D). 6 h